NEHYBA, Slavomír. Stacked Gilbert-type deltas filling an incised palaeovalley along the cratonward margin of a foreland basin (Miocene, Western Carpathian Foredeep). Geological Quarterly. Warzsawa: Polish Geological Institute, roč. 66, č. 3, s. 1-27. ISSN 1641-7291. doi:10.7306/gq.1661. 2022.
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Základní údaje
Originální název Stacked Gilbert-type deltas filling an incised palaeovalley along the cratonward margin of a foreland basin (Miocene, Western Carpathian Foredeep)
Autoři NEHYBA, Slavomír (203 Česká republika, garant, domácí).
Vydání Geological Quarterly, Warzsawa, Polish Geological Institute, 2022, 1641-7291.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10505 Geology
Stát vydavatele Polsko
Utajení není předmětem státního či obchodního tajemství
WWW URL
Impakt faktor Impact factor: 1.000
Kód RIV RIV/00216224:14310/22:00127168
Organizační jednotka Přírodovědecká fakulta
Doi http://dx.doi.org/10.7306/gq.1661
UT WoS 000911530600007
Klíčová slova anglicky Gilbert-type deltas; Incised valley; Provenance analysis; Stratigraphic architecture; Western Carpathian Foredeep
Štítky rivok
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnila: Mgr. Marie Šípková, DiS., učo 437722. Změněno: 9. 2. 2023 11:10.
Anotace
The coarse-grained Brno sands are an important groundwater aquifer and represent a volumetrically significant component of the Lower Badenian/Middle Miocene sedimentary infill of the Western Carpathian Foredeep, a foreland basin formed on the eastern margin of the Bohemian Massif in front of the Western Carpathians. The integration of core and outcrop facies analysis, summary of facies features, depositional processes and architectures, and integration of provenance analysis have led to a new depositional model for the Brno sands as the product of Gilbert-type delta systems prograding into an incised palaeovalley developed on the outer foreland basin margin. The position, shape and morphology of the palaeovalley were influenced by pre-Neogene basement faults trending NW–SE. The Gilbert-type deltas recognized can be classified as foreset-dominated with other elements subordinate. The foreset beds mainly reflect low-density turbidites, with varied but important evidence of deposits of high-density turbidity currents, cohesionless debris flows and debris falls. The thick foreset deposits show, in detail, repetitive successive prograding-retrograding episodes. These are interpreted as rapid high-frequency pulses of relative sea level change i.e. as high-frequency depositional sequences. The deltaic deposition of the Brno sands was terminated by deposits of a shoal-water delta and the sands were finally drowned by a thick pile of offshore pelagic clays. The provenance of Brno sands is located into the nearby geological units. Redeposition from the older basin infill also played an important role.
VytisknoutZobrazeno: 29. 3. 2024 06:23